Commit 203873a5 authored by Helge Deller's avatar Helge Deller

fbdev: stifb: Provide valid pixelclock and add fb_check_var() checks

Find a valid modeline depending on the machine graphic card
configuration and add the fb_check_var() function to validate
Xorg provided graphics settings.
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
parent e140980e
...@@ -921,6 +921,28 @@ SETUP_HCRX(struct stifb_info *fb) ...@@ -921,6 +921,28 @@ SETUP_HCRX(struct stifb_info *fb)
/* ------------------- driver specific functions --------------------------- */ /* ------------------- driver specific functions --------------------------- */
static int
stifb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct stifb_info *fb = container_of(info, struct stifb_info, info);
if (var->xres != fb->info.var.xres ||
var->yres != fb->info.var.yres ||
var->bits_per_pixel != fb->info.var.bits_per_pixel)
return -EINVAL;
var->xres_virtual = var->xres;
var->yres_virtual = var->yres;
var->xoffset = 0;
var->yoffset = 0;
var->grayscale = fb->info.var.grayscale;
var->red.length = fb->info.var.red.length;
var->green.length = fb->info.var.green.length;
var->blue.length = fb->info.var.blue.length;
return 0;
}
static int static int
stifb_setcolreg(u_int regno, u_int red, u_int green, stifb_setcolreg(u_int regno, u_int red, u_int green,
u_int blue, u_int transp, struct fb_info *info) u_int blue, u_int transp, struct fb_info *info)
...@@ -1145,6 +1167,7 @@ stifb_init_display(struct stifb_info *fb) ...@@ -1145,6 +1167,7 @@ stifb_init_display(struct stifb_info *fb)
static const struct fb_ops stifb_ops = { static const struct fb_ops stifb_ops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.fb_check_var = stifb_check_var,
.fb_setcolreg = stifb_setcolreg, .fb_setcolreg = stifb_setcolreg,
.fb_blank = stifb_blank, .fb_blank = stifb_blank,
.fb_fillrect = stifb_fillrect, .fb_fillrect = stifb_fillrect,
...@@ -1164,6 +1187,7 @@ static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref) ...@@ -1164,6 +1187,7 @@ static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref)
struct stifb_info *fb; struct stifb_info *fb;
struct fb_info *info; struct fb_info *info;
unsigned long sti_rom_address; unsigned long sti_rom_address;
char modestr[32];
char *dev_name; char *dev_name;
int bpp, xres, yres; int bpp, xres, yres;
...@@ -1342,6 +1366,9 @@ static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref) ...@@ -1342,6 +1366,9 @@ static int __init stifb_init_fb(struct sti_struct *sti, int bpp_pref)
info->flags = FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; info->flags = FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
info->pseudo_palette = &fb->pseudo_palette; info->pseudo_palette = &fb->pseudo_palette;
scnprintf(modestr, sizeof(modestr), "%dx%d-%d", xres, yres, bpp);
fb_find_mode(&info->var, info, modestr, NULL, 0, NULL, bpp);
/* This has to be done !!! */ /* This has to be done !!! */
if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0)) if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0))
goto out_err1; goto out_err1;
......
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